Known plaintext - XOR

20 Points  0x0

For this challenge you will need to decypher a simple XORed picture.

Author

Ryscrow,  

Level  Difficulty

Validations

4873 Challengers 3%

Note  Notation

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213 Votes

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 5 Solutions

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Challenge Results Challenge Results

Pseudo Challenge Lang date
rico   Clair connu - XOR 24 January 2020 at 00:19
Khaos450   Clair connu - XOR 23 January 2020 at 23:21
Hyatche   Clair connu - XOR 23 January 2020 at 18:01
EtC   Clair connu - XOR 23 January 2020 at 15:57
AMChat   Clair connu - XOR 23 January 2020 at 13:43
ifitch   Clair connu - XOR 23 January 2020 at 11:44
martin.merafina   Known plaintext - XOR 23 January 2020 at 11:39
schlecky   Clair connu - XOR 22 January 2020 at 22:32
Ssauw   Clair connu - XOR 22 January 2020 at 17:03
Nowhere   Clair connu - XOR 22 January 2020 at 14:35

 48 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Encoding - ASCII 26% 42412 5 Xartrick 10
pas_valide Encoding - UU 21% 33510 5 g0uZ 10
pas_valide Hash - Message Digest 5 21% 34168 5 g0uZ 6
pas_valide Hash - SHA-2 11% 17229 5 koma 4
pas_valide Shift cipher 7% 10341 10 m31z0nyx 6
pas_valide Pixel Madness 5% 8262 15 Ryscrow 10
pas_valide ELF64 - PID encryption 3% 4645 15 Lu33Y 10
pas_valide File - PKZIP 4% 6147 15 g0uZ 6
pas_valide Monoalphabetic substitution - Caesar 5% 7863 15 Arod 4
pas_valide Known plaintext - XOR 3% 4873 20 Ryscrow 5
pas_valide Code - Pseudo Random Number Generator 2% 1833 20 Tosh 5
pas_valide File - Insecure storage 1 4% 5247 20 g0uZ 5
pas_valide Polyalphabetic substitution - Vigenère 4% 5324 20 Arod 3
pas_valide System - Android lock pattern 3% 3430 20 Silentd 4
pas_valide Transposition - Rail Fence 2% 3258 20 YellowS4 3
pas_valide AES - CBC - Bit-Flipping Attack 1% 418 25 Tie21 1
pas_valide AES - ECB 1% 1365 25 cez40 4
pas_valide LFSR - Known plaintext 1% 318 25 Brissouille 1
pas_valide RSA - Factorisation 2% 2249 25 HacKSpider 4
pas_valide RSA - Decipher Oracle 1% 646 25 Zweisamkeit 3
pas_valide Service - Timing attack 1% 1550 25 g0uZ, koma 3
pas_valide Monoalphabetic substitution - Polybe 2% 1849 25 koma 6
pas_valide Initialisation Vector 1% 1007 25 manticore, notfound404 5
pas_valide GEDEFU 1% 323 30 makhno 1
pas_valide RSA - Corrupted key 1 1% 157 30 blackndoor 2
pas_valide RSA - Continued fractions 1% 763 30 sambecks 1
pas_valide RSA - Common modulus 1% 754 30 franb 2
pas_valide Service - Hash length extension attack 1% 469 30 koma 1
pas_valide AES - 4 Rounds 1% 117 35 Cryptanalyse 0
pas_valide ECDSA - Introduction 1% 78 35 Jrmbt 0
pas_valide RSA - Padding 1% 141 35 Tosh 0
pas_valide AES128 - CTR 1% 407 40 Tosh 1
pas_valide Discrete logarithm problem 1% 557 40 Thanat0s, RFC4949 3
pas_valide RSA - Corrupted key 2 1% 109 40 blackndoor 0
pas_valide RSA - Corrupted key 3 1% 50 40 blackndoor 0
pas_valide RSA - Multiple recipients 1% 669 40 franb 3
pas_valide AES - Fault attack #1 1% 61 50 Cryptanalyse 1
pas_valide Enigma Machine 1% 112 50 peyman 1
pas_valide ECDHE 1% 123 60 Tosh 2
pas_valide RSA - Lee cooper 1% 34 60 blackndoor, Synacktiv 0
pas_valide Service - CBC Padding 1% 688 60 koma 1
pas_valide Polyalphabetic substitution - One Time Pad 1% 267 60 Thanat0s 0
pas_valide White-Box Cryptography 1% 90 60 Cryptanalyse 3
pas_valide AES - Weaker variant 1% 38 70 Cryptanalyse 0
pas_valide Hash - SHA-3 1% 61 75 Revenger 1
pas_valide AES - Fault attack #2 1% 43 80 Cryptanalyse 0
pas_valide AES-PMAC 1% 9 100 Cryptanalyse 0
pas_valide ECDSA - Implementation error 1% 14 100 Tosh 0